However, when we examined the association between item valence and performance in a continuous manner, a clear U-shaped pattern emerged Items that had more extreme valence ratings (negative or positive) were associated with better performance than items with more neutral ratings. We conclude that using the item valence ratings we report, and treating item valence as a continuous rather than categorical predictor, will help bring consistency to the study of the association between item valence and performance in the RMET. (PsycInfo Database Record (c) 2020 APA, all rights reserved).Across time and place, right hand preference has been the norm, but what is the precise prevalence of left- and right-handedness? Frequency of left-handedness has shaped and underpinned different fields of research, from cognitive neuroscience to human evolution, but reliable distributional estimates are still lacking. While hundreds of empirical studies have assessed handedness, a large-scale, comprehensive review of the prevalence of handedness and the factors that moderate it, is currently missing. https://www.selleckchem.com/products/jsh-23.html Here, we report 5 meta-analyses on hand preference for different manual tasks and show that left-handedness prevalence lies between 9.3% (using the most stringent criterion of left-handedness) to 18.1% (using the most lenient criterion of nonright-handedness), with the best overall estimate being 10.6% (10.4% when excluding studies assessing elite athletes' handedness). Handedness variability depends on (a) study characteristics, namely year of publication and ways to measure and classify handedness, and (b) participant characteristics, namely sex and ancestry. Our analysis identifies the role of moderators that require taking into account in future studies on handedness and hemispheric asymmetries. We argue that the same evolutionary mechanisms should apply across geographical regions to maintain the roughly 110 ratio, while cultural factors, such as pressure against left-hand use, moderate the magnitude of the prevalence of left-handedness. Although handedness appears as a straightforward trait, there is no universal agreement on how to assess it. Therefore, we urge researchers to fully report study and participant characteristics as well as the detailed procedure by which handedness was assessed and make raw data publicly available. (PsycInfo Database Record (c) 2020 APA, all rights reserved).Childhood maltreatment is widely implicated as the strongest developmental risk factor for depression onset. The current research is novel in examining the fine-grained associations of childhood emotional versus physical versus sexual maltreatment to indices of the severity, course, and presence of anxiety and trauma-related psychopathology in depression. An amalgamation across 6 previous investigations resulted in a sample of 575 adolescents and adults (76% female; age range 12-70, M = 27.88, SD = 13.58). All participants were in a current episode of a unipolar depressive disorder. Retrospective reports of childhood maltreatment were assessed using a rigorous contextual interview with independent, standardized ratings. Higher levels of emotional maltreatment and/or sexual maltreatment emerged as significantly associated with greater depression severity, number of previous episodes, and risk for posttraumatic stress disorder (PTSD), and were significantly more strongly associated with these characteristics than was physical maltreatment. Further, emotional maltreatment perpetrated by mothers was significantly associated with depression severity and history, whereas emotional maltreatment perpetrated by fathers was significantly associated with a greater risk of PTSD. These latter results suggest that prevention and intervention efforts may need to focus on the unique roles of mothers versus fathers on the development of depressive- versus threat-related psychopathology, respectively. (PsycInfo Database Record (c) 2020 APA, all rights reserved).Research on the implications of childhood emotional maltreatment for later romantic relationship well-being has been accumulating. More efforts are needed to systematically delineate the etiological chains of the more proximal processes explaining why childhood emotional maltreatment, as a more distal risk factor, might ultimately result in later romantic relationship malfunctioning. Using multiple-wave data from a diverse community sample of primiparous women across the transition to parenthood (N = 159), we conducted a process model in which adult attachment, emotion regulation difficulties, and depressive symptoms were examined as potential mediators for the associations between childhood emotional maltreatment and various aspects of later couple functioning. Results demonstrate that adult attachment anxiety played a key role in accounting for the associations between childhood emotional maltreatment and the negative aspects of later couple functioning (i.e., conflict and ambivalence) through its associations with emotion regulation difficulties and depressive symptoms. In contrast, adult attachment avoidance more directly mediated the associations between childhood emotional maltreatment and the positive dimensions of later couple functioning (i.e., love and maintenance), without other intervening mediators. Overall, the currently identified risk chains contribute to a more nuanced understanding of the mechanisms via which childhood emotional maltreatment shapes later romantic relationship functioning and also help clinicians specify potential targets for effective interventions aimed at diminishing the detrimental consequences of childhood emotional maltreatment for later intimate relationship well-being. (PsycInfo Database Record (c) 2020 APA, all rights reserved).We examined a possible predictor of (step)parent-adult child closeness in adulthood, namely, the frequency of parental involvement in different child-rearing tasks during youth. We expected that although involvement in children's lives would be important for the strength of all intergenerational ties, it would be particularly important for stepparents' closeness with their adult stepchildren. We used the Parents and Children in The Netherlands survey to test our hypotheses. Our analytical sample consisted of the reports of adults (25-45 years old; n = 5,107) about how frequently different types of parents engaged with them in activities related to school, leisure, and personal communication (including reports about 1,361 stepmothers and 1,489 stepfathers). Our results clearly demonstrate that an increase in the frequency of performing a task was associated with more closeness during adulthood, but this effect was significantly stronger in stepparent-child compared to biological parent-child ties. We interpret this finding as stepparents having to "earn" or more explicitly demonstrate their desire for closeness to stepchildren.